.am-list-item {
  min-height: 40px;
  .am-list-line {
    .am-list-arrow {
      width: 12px !important;
      height: 12px !important;
    }
    .am-list-arrow-horizontal {
      color: red;
    }
  }
}
// 放在外面避免将:after的其他属性覆盖
.am-list-line {
  &:after {
    background-color: @split-line  !important;
  }
}